EP0839216B1 - Verfahren zur erzeugung einer antihaftbeschichtung sowie mit einer solchen versehene gegenstände - Google Patents

Verfahren zur erzeugung einer antihaftbeschichtung sowie mit einer solchen versehene gegenstände Download PDF

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Publication number
EP0839216B1
EP0839216B1 EP95938434A EP95938434A EP0839216B1 EP 0839216 B1 EP0839216 B1 EP 0839216B1 EP 95938434 A EP95938434 A EP 95938434A EP 95938434 A EP95938434 A EP 95938434A EP 0839216 B1 EP0839216 B1 EP 0839216B1
Authority
EP
European Patent Office
Prior art keywords
coating
process according
hard material
layer
metal surface
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP95938434A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0839216A1 (de
Inventor
Klaus Dorfschmidt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fissler GmbH
Original Assignee
Fissler GmbH
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Filing date
Publication date
Application filed by Fissler GmbH filed Critical Fissler GmbH
Publication of EP0839216A1 publication Critical patent/EP0839216A1/de
Application granted granted Critical
Publication of EP0839216B1 publication Critical patent/EP0839216B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/08—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface
    • B05D5/083—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface involving the use of fluoropolymers
    • B05D5/086—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface involving the use of fluoropolymers having an anchoring layer

Definitions

  • the invention relates to a method for generating a Non-stick coating on the surface of a proportionate soft metal substrate according to claim 1 and one thereafter manufactured article according to claim 24.
  • DE-AS 15 46 934 describes a method for forming a Polytetrafluoroethylene protective layer on cleaned and anodized aluminum objects known in which after cleaning the metal surface a strong intermediate etching treatment in hydrochloric acid and an anodic oxidation is carried out according to the direct current sulfuric acid method, around both the surface abrasion resistance and the scratch resistance and thus the lifespan of the polytetrafluoroethylene layer to increase.
  • the etching treatment produces in the Undercut hollows, their Walls by anodizing with an anodized layer of hard to be coated.
  • the anodized layer is in turn porous and absorbent and takes the protective layer made of polytetrafluoroethylene good on. With the anodic oxidation the in itself a soft surface of the undercut cavities Hardness, the abrasion and the applied protective layer Scratch resistance there.
  • EP-OS 0 424 072 describes a process for the production of an aluminum cookware with a non-stick layer Known for contact with the food, at which a Aluminum substrate at least in the surface area of the to be applied roughened and then anodized becomes.
  • the non-stick layer is then immediately on the anodized surface applied, to improve the Abrasion resistance and scratch resistance the anodization layer generated by hard anodization and the hard anodization layer with a thickness between 15 and 50 ⁇ m.
  • the non-stick layer can be polytetrafluoroethylene (PTFE).
  • the surface roughness is determined by means of etching or sandblasting generated only to improve liability.
  • EP-OS 0 594 374 describes a method for forming a Surface of a cooking vessel facing a cooking material with a Discloses aluminum substrate in which the aluminum substrate first hard anodized, then preferably a layer of material made of ceramic, aluminum oxide or stainless steel sprayed on and then applied a non-stick layer is, the spray layer in the form of hemispherical Particle is formed, whereby the anchoring effect for the non-stick layer is to be improved.
  • EP-OS 0 365 485 discloses a method for producing a non-stick coating in which an aluminum / titanium oxide layer is sprayed onto a surface of a vessel roughened by sandblasting at a temperature of the vessel of at least 400 ° C. After cooling, a fluoropolymer layer is applied and sintered at over 300 ° C.
  • the "roughness depth" which is not defined in more detail, should be between approximately 100 and 200 ⁇ m.
  • a similar process is known from GB-A-2 277 466, in which the roughness depths R a are 4.5-5.5 ⁇ m and 5.0-8.0 ⁇ m, respectively.
  • the object of the present invention is a method and to propose an object manufactured thereafter which is a high quality of the non-stick layer due to functional separation regarding abrasion resistance and scratch resistance is achieved. This task is carried out with the characteristics of Claim 1 solved.
  • R a , R y , P c and t p are the quantities defined in DIN 4762 and 4768 (for determination using the tactile cut method) for the arithmetic mean roughness (R a ), the ten-point height (R z ) and the maximum profile height (R y ), the peak number (P c ) and the profile load share (t p ) (synonymous with the material share M r ).
  • R a is the arithmetic mean of the absolute values of the profile deviations within a reference distance
  • R z is the mean of the absolute values of the heights of the five highest profile peaks and the absolute values of the depths of the five deepest profile troughs within a reference distance
  • R y is the distance between the line of the profile tips (upper contact line) and the line of the profile valleys (lower contact line) within a reference distance
  • P c is the parameter (used by many manufacturers) for the number of profile features per cm that exceed the set upper cutting level and subsequently fall below the lower one
  • t p that in% of the ratio of the load-bearing length of the profile to the reference distance at a certain cutting level.
  • the brackets behind P c indicate the bandwidth determined by the lower and upper cutting level in ⁇ m.
  • Layers that are both wear-resistant and non-stick are designed so that two different Different layers on top of each other or next to each other Perform functions.
  • This principle of separation of functions will used in an optimal manner according to the invention by on a relatively soft (metallic) substrate with (according to roughness depth and the load-bearing component) of a roughness created in a hard material layer (one or more layers) is applied.
  • a hard material layer On this hard material layer then becomes a non-stick layer (one or multilayer), preferably made of a fluorocarbon resin applied, which is particularly in the wells of Hard material layer.
  • the exposed surface of the Non-stick layer can affect the surface roughness Compensate the hard material layer more or less, d. H. e.g. B. also be flat.
  • the hard material tips take over the function of power transmission, while the majority of the area (90 to 99%) the Non-stick effect takes over.
  • the non-stick coating optimal abrasion resistance properties, Scratch resistance and non-stick effect are given.
  • the relatively small one but not too low a share of the surface so that a least possible damage to the non-stick layer if not too large areas between two tips of the roughened Surface is reached.
  • the metal substrate for example shaped the metal substrate, then to achieve the desired one Roughness blasted, the blasted surface possibly chemically cleaned or pickled, then the hard material layer generated or applied, and then the non-stick layer, for example. made of polytetrafluoroethylene (PTFE) or the like. Non-stick systems applied and finally baked or sintered.
  • PTFE polytetrafluoroethylene
  • the non-stick coating produced with the method according to the invention is not only ideal as an interior pan coating, but also for other household appliances, such as irons, cake and casserole dishes, as well as for machine elements, where there is non-stick effect and wear resistance arrives, as with rollers, injection or casting molds and the like ..

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Plasma & Fusion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Laminated Bodies (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Cookers (AREA)
  • Coating By Spraying Or Casting (AREA)
EP95938434A 1995-11-08 1995-11-08 Verfahren zur erzeugung einer antihaftbeschichtung sowie mit einer solchen versehene gegenstände Expired - Lifetime EP0839216B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP1995/004390 WO1997017478A1 (de) 1995-11-08 1995-11-08 Verfahren zur erzeugung einer antihaftbeschichtung sowie mit einer solchen versehene gegenstände

Publications (2)

Publication Number Publication Date
EP0839216A1 EP0839216A1 (de) 1998-05-06
EP0839216B1 true EP0839216B1 (de) 2000-03-08

Family

ID=8166120

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95938434A Expired - Lifetime EP0839216B1 (de) 1995-11-08 1995-11-08 Verfahren zur erzeugung einer antihaftbeschichtung sowie mit einer solchen versehene gegenstände

Country Status (5)

Country Link
EP (1) EP0839216B1 (da)
AT (1) ATE190362T1 (da)
DE (1) DE59507977D1 (da)
DK (1) DK0839216T3 (da)
WO (1) WO1997017478A1 (da)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008090192A1 (de) * 2007-01-24 2008-07-31 Thyssenkrupp Nirosta Gmbh Giesswalze für eine zweiwalzengiessvorrichtung und zweiwalzengiessvorrichtung
DE10248118B4 (de) * 2002-10-10 2011-07-21 Süddeutsche Aluminium Manufaktur GmbH, 89558 Verfahren zum Aufbringen eines dünnkeramischen Beschichtungsmaterials auf eine zu beschichtende Oberfläche eines Kraftfahrzeug-Anbauteils und Kraftfahrzeug-Anbauteil
CN102677119A (zh) * 2012-05-29 2012-09-19 哈尔滨工业大学 一种铝合金不粘锅涂层的制备方法

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999032234A1 (en) * 1997-12-22 1999-07-01 E.I. Du Pont De Nemours And Company Process for sealing coatings
IL150397A0 (en) * 2000-01-14 2002-12-01 Astrazeneca Ab A method for applying a polymer coating to the internal surface of a container
DE10014486C2 (de) * 2000-03-23 2003-06-12 Dieter Kampmeier Verfahren zum Aufbringen einer Antihaftschicht
DE10239359A1 (de) * 2002-08-24 2004-02-26 Kämpfer, Hans-Peter Mehrere Kammern aufweisender Hydrozyklonseparator
FR2897251B1 (fr) * 2006-02-14 2013-07-12 Seb Sa Article culinaire anodise et procede de fabrication d'un tel article
WO2010121016A2 (en) * 2009-04-15 2010-10-21 Octi Tech Limited, LLC Ceramic article imaging process and materials
JP6234754B2 (ja) * 2013-09-18 2017-11-22 株式会社神戸製鋼所 電極用金属板及び電極
DE102016221023A1 (de) 2016-10-26 2018-04-26 MTU Aero Engines AG Verfahren zum beschichten durch thermisches spritzen und vorbereitung einer oberfläche hierfür durch elektrochemisches oder chemisches ätzen oder lasermaterialbearbeitung

Family Cites Families (10)

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Publication number Priority date Publication date Assignee Title
DE3712684A1 (de) * 1987-04-14 1988-10-27 Castolin Sa Verfahren zum herstellen einer gespritzten oberflaeche mit definierter rauhigkeit sowie dessen verwendung
JPS63259062A (ja) * 1987-04-15 1988-10-26 Eguro Tekkosho:Kk セラミツクスの溶射被覆方法
CH692481A5 (de) * 1988-10-21 2002-07-15 Hort Revetements S A Verfahren zum Aufbringen einer Fluorpolymer-Schicht auf eine Oberfläche eines Gegenstands und Gegenstand beschichtet nach dem Verfahren.
TW214570B (da) * 1989-06-30 1993-10-11 Eltech Systems Corp
US5314601A (en) * 1989-06-30 1994-05-24 Eltech Systems Corporation Electrodes of improved service life
TW197475B (da) * 1990-12-26 1993-01-01 Eltech Systems Corp
DE4113211A1 (de) * 1991-04-23 1992-10-29 Winfried Heinzel Verfahren zum beschichten von haus- und kuechengeraetschaften
GB9222275D0 (en) * 1992-10-23 1992-12-09 Meyer Manuf Co Ltd Cookware and a method of forming same
US5411771A (en) * 1993-04-29 1995-05-02 Tsai; Tung-Hung Method for coating metal cookware
DE4323117C1 (de) * 1993-07-10 1995-03-09 Ptg Plasma Oberflaechentech Verfahren zum Beschichten von Haus- und Küchengerätschaften und Haus- und Küchengerätschaft

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10248118B4 (de) * 2002-10-10 2011-07-21 Süddeutsche Aluminium Manufaktur GmbH, 89558 Verfahren zum Aufbringen eines dünnkeramischen Beschichtungsmaterials auf eine zu beschichtende Oberfläche eines Kraftfahrzeug-Anbauteils und Kraftfahrzeug-Anbauteil
WO2008090192A1 (de) * 2007-01-24 2008-07-31 Thyssenkrupp Nirosta Gmbh Giesswalze für eine zweiwalzengiessvorrichtung und zweiwalzengiessvorrichtung
CN102677119A (zh) * 2012-05-29 2012-09-19 哈尔滨工业大学 一种铝合金不粘锅涂层的制备方法

Also Published As

Publication number Publication date
ATE190362T1 (de) 2000-03-15
WO1997017478A1 (de) 1997-05-15
DE59507977D1 (de) 2000-04-13
DK0839216T3 (da) 2000-08-21
EP0839216A1 (de) 1998-05-06

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